That's more or less what I'm building. I'm building it for myself with little concern for distribution, but you can find it here: https://github.com/nicbou/backups
The biggest challenge is to extract stuff from all those data silos. For geolocation, I'm using the excellent OwnTracks, and I plan to write my own receiver to replace the one in Nextcloud. I also extract geolocation from images.
The biggest challenge is to extract stuff from all those data silos. For geolocation, I'm using the excellent OwnTracks, and I plan to write my own receiver to replace the one in Nextcloud. I also extract geolocation from images.